Fix TODO detection in CI

For some reason, ripgrep cannot infer the directory to search in on CI
like it can when ran locally. Passing the working directory explicitly
fixes this.

Author: chitoyuu

tools/detect-todo.sh

@@ -67,7 +67,7 @@ fi
 
 # Actual run
 
-rg -iTh -Tsh --pcre2 "$REGEX"
+rg -iTh -Tsh --pcre2 "$REGEX" "$(pwd)"
 if [[ $? -eq 0 ]]
 then
     echo 'Found TODO comments without issue numbers.'